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National Security Agency (NSA) Archive

Documents by and relating to the National Security Agency (NSA).



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Title
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William F. Friedman NSA Collection
collection
7,617
ITEMS
401,323
VIEWS
collection
eye 401,323
The 7,000 William Friedman documents released by the NSA.
Venona Documents
collection
2,690
ITEMS
136,199
VIEWS
collection
eye 136,199
The Venona project was a counter-intelligence program initiated by the United States Army Signal Intelligence Service (a forerunner of the National Security Agency) that lasted from 1943 to 1980. The program decrypted messages sent by Soviet Union intelligence agencies, including its foreign intelligence service and military intelligence services. The project produced some of the most important breakthroughs for western counter-intelligence, including the discovery of the Cambridge spy ring and...
Topics: Venona, Venona files, Venona documents, SIS, Signal Intelligence Service, US Army, NSA, National...
Community Texts
texts
eye 24,855
favorite 1
comment 0
The Target Intelligence Committee (TICOM) was a high level agency formed by the United States to unite their cryptanalytic efforts with British counterparts in Bletchley Park. TICOM would often be sent into the field tasked to retrieve cryptographic material after battles ended, from both Axis and Soviet forces.  The majority of their reports were not declassified until 2009. Reports preserved here have been curated by Christos T riantafyllopoulos  for his Intel Corner blog and Randy Rezabek...
Topics: ticom, Cryptography, World War 2, World War II, Target Intelligence Committee, ENIGMA Machine,...
National Security Agency (NSA) Archive
by National Security Agency
texts
eye 5,473
favorite 3
comment 0
NSA UFO files
Topics: NSA, UFO, UFOs
CIA, NSA Files & White House Recordings relating to the Cuban Missile Crisis.
Topics: CIA, NSA, White House, National Security Agency, Central Intelligence Agency, Cuba, Cuban Missile...
National Security Agency (NSA) Archive
texts
eye 2,441
favorite 1
comment 0
NSA finding aid.
Topics: NSA, National Security Agency, Center for Cryptologic History
National Security Agency (NSA) Archive
by National Security Agency
texts
eye 2,412
favorite 7
comment 1
Voynich Manuscript: An Elegant Enigma
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Topics: Voynich Manuscript, Voynich, NSA, National Security Agency
Military Cryptanalytics, Part I, Monoalphabetic Substitution Systems; Friedman And Callimahos
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
texts
eye 1,835
favorite 2
comment 0
Lisbonian Selection Of Roots And Terminals
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
texts
eye 1,726
favorite 2
comment 0
NSA Methodology for Adversary Obstruction
Topics: NSA, National Security Agency
National Security Agency (NSA) Archive
by NSA
texts
eye 1,279
favorite 2
comment 0
UFO
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act
National Security Agency (NSA) Archive
texts
eye 1,218
favorite 3
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
German Radio Intelligence (BY Albert Praun, Former Lt. Gen.); Dept. Of The Army Office Of The Chief Of Military History. Includes Nsa Memo And Comments On Report
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
American Army Field Codes In The American Expeditionary Forces During The First World War
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency Identification Badge System; Nsa Memorandum Number 120-23
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
William F. Friedman NSA Collection
texts
eye 1,089
favorite 5
comment 0
Basic Cryptography; Dept Of Army Technical Manual Tm32-220
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
by NSA
texts
eye 1,079
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Venona Documents
texts
eye 982
favorite 2
comment 0
The Venona Story
Topics: NSA, National Security Agency, Venona, Venona files, SIGINT, COMINT, Cold War
William F. Friedman NSA Collection
by William F. Friedman
texts
eye 958
favorite 4
comment 0
The Friedman Lectures On Cryptology
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Military Cryptanalysis, Part I, Monoalphabetic Substitution System; 4th Edition, Friedman , Revised And Enlarged By Callimahos
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
by William F. Friedman
texts
eye 907
favorite 0
comment 0
Division Field Code No.4
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Military Cryptanalysis, Part Iv - Transposition And Fractionating Systems; By William F. Friedman For The War Department's Chief Signal Officer
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Russian Dictionary Reverse Alphabetic Sort; Nsa-725 Crypto-Linguistic Working Aid No.3
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
War Secrets In The Ether Part Iii By Wilhelm F Flicke; Aspects Of Espionage And The Counterespionage Conducted On A Scale Never Before Known
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
W.F. Friedman Letter To Dept Of State: Cryptographic Security Of Codatype Cypher Machine; S-028,605
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
texts
eye 740
favorite 0
comment 0
Oath For National Security Agency Employees
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Telemetry Intelligence (TELINT) During the Cold War
Topics: NSA, TELINT, Telemetry, Cold War
War Secrets In The Ether Parts I And Ii By Wilhelm F Flicke; Part 1 The Period From The Inception Of The Intercept Service To The End Of Ww I; Part Ii - The Period Between The Two World Wars
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
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Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
National Security Agency (NSA) Archive
texts
eye 609
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Military Cryptanalysis Part Iv Transposition And Fractionating Systems By William F Friedman
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Military Cryptanalytics, Part Ii, Interim Edition (SECOND Section); Lambros D. Callimahos And William F. Friedman
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Military Cryptanalytics, Part Ii, Interim Edition (FIRST Section): Periodic Polyalphabetic Substitution Systems; William F. Friedman And Lambros D. Callimahos
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Usa: Army Regulations, Classification Marking & Safeguarding Military Information, Friedman's Copies; S-028,297
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
by NSA
texts
eye 515
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Statistical Methods In Cryptanalysis, Revised Edition. Register No. 193, Serial No. 1008; By Solomon Kullback
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
texts
eye 502
favorite 1
comment 0
Codes And Ciphers (CRYPTOLOGY) Article By William F. Friedman
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
William F. Friedman NSA Collection
texts
eye 493
favorite 0
comment 0
German Military Ciphers From February To November 1918
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Elements Of Cryptanalysis, Training Pamphlet No. 3; Prepared In The Office Of The Chief Signal Officer
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
The Index Of Coincidence And Its Applications In Cryptanalysis; Technical Paper By William F. Friedman, War Department
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
by National Security Agency
texts
eye 469
favorite 0
comment 0
179 pages of National Security Agency files covering the Cuban Missile Crisis. Files document NSA's human intelligence (HUMINT), photographic intelligence (PHOTINT), and signals intelligence (SIGINT) units intelligence coverage of Cuba and Soviet military support of Cuba. The signing of agreements with the Soviet Union and Czechoslovakia in mid-1960 was followed by a secret arms buildup in Cuba sponsored by the Soviets and their satellites. Early indications of that buildup came from signals...
Topics: NSA, National Security Agency, Cuba, Cuban Missile Crisis
Military Cryptanalysis, Parts I And Ii: Monoalphabetic Substitution Systems
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
texts
eye 445
favorite 1
comment 0
Executive Order 9604 The New York Times, Tuesday, August 28, 1945
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
National Security Agency (NSA) Archive
texts
eye 438
favorite 2
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
William F. Friedman NSA Collection
texts
eye 425
favorite 0
comment 0
Field Codes Used By The German Army During The World War
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
texts
eye 408
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act, European...
Excerpt From The Official Secrets Act, 1889; An Act To Prevent The Disclosure Of Official Documents And Information;
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
texts
eye 399
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Fundamentals Of Traffic Analysis (RADIO-TELEGRAPH); Department Of The Army Technical Manual Tm 32-250; Department Of The Air Force Manual Afm 100-80
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
texts
eye 394
favorite 0
comment 0
Ask Beale 656725
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act
National Security Agency (NSA) Archive
texts
eye 389
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
William F. Friedman NSA Collection
texts
eye 377
favorite 1
comment 0
Military Cryptanalysis, Part Iii: Aperiodic Substitution Systems
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Studies In German Diplomatic Codes Employed During The (FIRST) World War
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
National Security Agency (NSA) Archive
by NSA
texts
eye 368
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
William F. Friedman NSA Collection
texts
eye 368
favorite 1
comment 0
Study Of The Beale Papers, 15 August 1949
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Military Cryptanalysis, Part I -- Monoalphabetic Substitution Systems
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
The Zimmermann Telegram Of January 16, 1917 And Its Cryptographic Background
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
texts
eye 364
favorite 1
comment 0
The Friedman Lectures, Office Of Training Services
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Transmittal And Receipt Form - A Version Of The Japanese Problem In The Signal Intelligence Service (LATER Signal Security Agency) 1930 - 1945 By John B. Hurt
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
National Security Agency (NSA) Archive
texts
eye 349
favorite 0
comment 0
Topics: NSA, National Security Agency, FOIA, Freedom of Information, Freedom of Information Act,...
Military Cryptanalysis Part I, Monoalphabetic Substitution Systems; 3rd Edition
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Military Cryptanalysis, Part Ii, Simpler Varieties Of Polyalphabetic Substitution Systems
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
by William F. Friedman
texts
eye 334
favorite 0
comment 0
Cryptanalytic Machines In Nsa
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
Army Extension Courses, Special Text No. 165, Elementary Military Cryptography; 1935 Edition
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
William F. Friedman NSA Collection
texts
eye 322
favorite 5
comment 0
Synoptic Tables For The Solution Of Ciphers
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman
The Contribution Of The Cryptographic Bureaus In The World War; By Yves Gylden - War Department Publication -
Topics: NSA, Cryptography, National Security Agency, Friedman, William F. Friedman